Calculating-machine.



F. TRINKS.

GALCULATIN G MAGHINB. v APPLIGATION FILED Nov. 5, 1908.

928,083, Patented July 13, 1909. F' j 2 SHEETS-SHEET 1.

per a F. TRINKS.

GALOULATIN G MACHINE.

APPLIOATION FILED Nov. 5, 1908.

Patented July 13, 1909.

2 SHEETS-SHEET 2t .I t. l-I-l-llll m rll-l-llllu 7117/11 mui FRANZTRINKS, OF BRUNSWICK, GERMANY.

CALCULATING-MACHINE Specification of Letters Patent.

Patented July 13, 190e.

Application ledvNovember 5, 1908. Serial No. 461,257.

chines having two crank revolution counting.

mechanisms for registering the rotations of thel hand crank.Fundamentally this ty e of machine is disclosed by British Pat nt No.13700 of 1898, and the present machine is an improvement on thatdisclosed by the latter patent. One of these crank revolution countingmechanisms may be disposed on the I beginning the second multiplicationb. n,

carriage of the machine and the other disposed in the upper part of thecasing, or both mechanisms may be disposed in the upper part of thecasing. At least one of these crank revolution counting mechanisms mustbe provided with well known -tens transferring nmeans, as disclosed forinstance in U. S. Letters Patent No. 662,899, or any other tenstransferring means. In machines of this class a common zero settingmechanism has been provided, which, by a single operation, removes theindications on both of said revolution counting mechanisms.

'lhe object of the improvements is to so construct the zero settingmechanism that the revolution counting mechanisms can be used to afurther purpose, which will be understood from the following. If inperforming successive operations of multiplication and addition of theform'a. m -1- b. n c. o etc. the values to be set on the machine(multiplicands) are m, n and 0 and the values to be registered on themachine by the revolutions of the crank (multipliers) are a, b, c, etc.,the usual revolution counting mechanism, which -does not require tenstransferring means, shows the value a at the end of the firstmultiplication a. m. Beforle t e number a must be removed from therevolution counting mechanism by the zero setting mechanism, whereupon,after the second multiplication b. n, the revolution counting mechanismshows the number b, etc. If now the machine is provided with a secondcounting mechanism having tens transferring means, theI latter showsthel value a b -lc -letc., unless' it has been set to Zero simul-`Vmechanisms may taneously with the rst named counting mechanism. If nowthe numerals m, n', 0, etc. indicate the prices of the goods sold, anda, o, c, etc. the numbers of the pieces of goods sold, the firstrevolution counting mechanism which separately indicates the values a,b, c, etc., controls the correct registration of the separate` numbersof pieces sold, while the second one which shows the sum a -lb c -letc.,`indicates the sum of all the pieces, whereby good controlling means isafforded. However, to enable such operations to be made, both revolutioncounting mechanisms must be provided with separate zero 4settingmechanisms requiring a double zero setting operation after eachmultiplication, when not performing the calculating operation described,vbecause both revolution counting` mechanisms would have to be set tozero.

The invention consists in such an arrangement of coupling means betweenthe zero setting shafts of 'the two crank revolution counting mechanismsthat both mechanisms simultaneously may be set to zero by one and thesame operation, and that the counting mechanism, which does not possessor does not need tens transferring means, may be set to zeroindependently of the other counting mechanism.

The invention further consists in the details of construction andarrangement of several coupling devices.

For the purpose of illustrating the invention, I have'shown some formsembodying the same in the accompanying drawings, in which the sameletters of reference have been used to indicate corresponding parts.

In said drawings: Figure 1 is a front elevation of the machine with thecasing cover removed and parts broken away, showing the two co-aXially4arranged crank revolution counting mechanisms, and, by way of example, aclutch mechanism for the Zero setting mechanisms. Fig. 2 is a similarview of the two crank revolution counting mechanisms showing amodification of the clutch mechanism. Fig. 3 is asimilar view to Fig. 2showing a separate zero setting mechanism for one of the revolutioncounting mechanisms and a common zero setting mechanism for both of saidrevolution countingmechanisms, either one of which Zero setting beoperated at will. Fig. 4 is a vertical cross-section of Fig. l, taken onthe line 4 4. Fig. 4a shows the clutch mechanism of Figs'. l and 4 on-an enlarged scale. Fig. 5 is a similar cross-section, taken on the line5 5 of Fig. 2. Fig. is a similar cross-section, taken on the line 6 6 ofFig. 3. Fig. 7 is a `detail plan view of a portion of the mechanismshowing the arrangement of a tens transferrin means.

In the drawings, Figs. l and a, each of the well known cam disks g isarranged adjacent to an adjusting wheel g1, all these adjusting wheelsbeing fixed on the common shaft t, and the cam disks g being loose andrevolubly mounted on the hubs of the wheels g1. The cam disks whenrotated bring the radially displaceable teeth g2 of the adjusting wheelsg1 into and out of operating position. Each of the cam disks g isrotated by a projection or handle a', see Fig. 4, projecting through aslot :v1 in the casing cover m2 and exteriorly engageable. lt will beunderstood that a suitable number of the cam disks andadjustable wheelsg1 having the radially displaceable teeth g2 will be employed and thenumber of slots 001 will correspond to the number of cam disk handles oroperat'ng devices rlhe adjusting wheels g1 when rotated by means of themachine crank bl and the intermediate spur gear wheels h2, h3 transmittheir movement by means of gear wheels il, 2 to the figure Wheels z' ofthe main counting mechanism. This latter mechanism is mounted on adisplaceable carriage 3 movable parallel with relation to the axis h, sothat the teeth g2 of the adjusting wheels g1 may act on the gear wheelsl of the higher figure wheels z', for instance that at the extreme rightof Fig. l, but the adjusting wheel g1 may act similarly on the second orthird gear wheels l or on the figure wheels z' of higher denomination.rlhe main counting mechanism is also provided with well known tens transferring means consisting of pivoted levers j operated by pins 4 of thefigure wheels a' so as to bring a beveled face jl in position forengagement with a pivotal tooth g3 of the adjusting wheels g1 and thusset up engagement between the latter and the gear wheel 1. The beveledface jl forms a part of the upper extremity of each pivoted lever j, andtwo of the teeth g3 and two beveled faces jl form a part of thecomplement of each lever f 7' and each wheel z' to accommodate right andleft hand rotations of the machine crank itl. Beveled faces g4L areprovided on the eripheries of the adjusting wheels g1 to bring the tenstransferring levers j back into their positions of rest or in normalcondition.

The two crank revolution counting mechanisms a and b are located withinthe upper art of the machine casingabove the adjust-ing wheels g1 andco-axially with relation to each other, and the driving member for eachcounting mechanism, namely, the single toothed Wheels 7c and Z arecoupled 'to each other by means of a sleeve m to which @sepas the teethc and Z are secured. The sleeve m is movable or displaceable axially ona shaft m1 rotated through the medium of spur l gears h2, 71.4 from themachine crank 171,1 in

such manner that the'shaft m1 makes a full rotation simultaneously withthe crank k1. The sleeve m is displaced by means of an endless band orchain n running over two pulleys nl located at opposite extremities ofthe machine, the upper part of the chain n being connected to an arm esliding at its lower extremity on a shaft o1, see Fig. 4, and having afork 02 at its upper extremity to engage between circumferentialshoulders m? on the sleeve m, see Fig. l. The lower part of the chain nis connected to an arm p which is secured to and movable with the maincounting mechanism carriage 3, see Fig. 4. `When the carriage 3 is movedlaterally one value distance, that is to say, when one figure disk z' ismoved in place of the adjacent tigure disk z', both teeth /t and Z ofthe crank revolution counting mechanisms or figure disks a and b aremoved simultaneously one value distance laterally, but in an oppositedirection so that both teeth or tappets /c and Z are always brought inposition to engage the correct gearings al, 1 of the respective crankrevolution counting figure disks a and Z) when the machine crank 72,1 isturned. The counting mechanism Z) is provided with well known tenstransferring means capable of being disengaged in a well known manner.rlhe tens transferring means "or mechanism is shown only partiallyapplied to avoid confusion in reading the drawings, or between the unitsand tens gure disks. In practice this means or mechanism will be usedwith the remaining figure wheels. Between each two adjacent figure disksb is arranged such a tens transferring means, which consists, as shownin Fig. 1, of a Maltese cross disk g and two gears r1, r2 respectivelyengaging a single tooth Z22 of a figure disk b of one value and thetoothing b1 of the next higher figure disk b, as shown in Fig. 1, thetrans ferring means being mounted in a swinging arm g1..

The zero setting shafts c and d of the two crank revolution countinmechanisms a and Z) when turned engage pms of the counting disks and areseparated from one another, and a coupling device is used to connectboth shafts c and (l so that on rotation of one zero setting shaft, forinstance c, by means of its winged or thumb screw c3, see Fig. l, theother zero setting shaft, d, is turnedn In this manner it is possible toturn either zero setting shaft independently of the other, or bothshafts 0 and d simultaneously. The coupling device for connecting bothshafts consists, in the example illustrated, of a clutch sleeve e whichis axially displaceably arranged on the adjacent ends of theshafts c andd and which, withan inner key or rib y,

See especially Fig. 4, engages accordingjo its osition one or both ofthe axially exten ing grooves c2 and d2 of the shafts c and d. In the 1,both sha s c and d are disconnected, but when the sleeve e by means of aslide s is moved to the right, the shafts e and d are coupled with eachother. If the said clutch mechanism is thrown into operation so as toconnect the shafts c and d, the revolution counting mechanisms operatein the usual Way; but whenerforming calculating operations o'f the caracter a.fm,+b.n{-c.oietc., the vclutch mechanism is thrown out ofoperation, and the shafts c and d are disconnected from eachother, sothat the zero setting mechanism of the revolution counting mechanism acan be se arately operated. In this case, after comp eting thecalculating operation, the clutchmechanism is thrown into operation andthe revolution counting mechanisms are simultaneously set to zero.

It will be understood that at the -end of each complete calculatingoperation the revolution counting mechanism b and the counting mechanisma. must be set to zero. Therefore, the clutch mechanism can beconstructed in such a way that it is normally out of operation, While itis automatically thrown into operation, when using the zero settingmechanism of the continuous revolutionv counting mechanism b. An exampleof such a construction is shown in Figs. 2 and 5, in which the shaft dof the zero setting mechanism is provided in its face with a. groove d1engaged, when the shafts c and al are in their positions of rest, by anose c1 of the shaft c of the zero setting mechanism, and thereby theshaft d, when rotated, carries'along the shaft c, while the nose c1 isdisengaged from the groove d1 by axial displacement of the shaft c uponrotation of the latter; or, a clutch mechanism can be used which actsonly in one direction so that the zero setting piosition of parts shownb y Fig.

independently of the zero setting mechanism of the continuous revolutioncounting mechanism. l

In the example shown in Figs. 3 and 6, both of the revolution counting'mechanisms are `provided with a ,common Zero setting mechanism, and theordinary counting mech- -anism is provided with a second separatelyoperated lzero setting mechanism. lIn the example illustrated,the commonzero setting mechanism is operated in the usual manner by rotating theshaft loosely carrying the disks of the revolution vcounting mechanisms,While the special zero setting operation for the single countingmechanism is effected from a second shaft f arranged parallel with theshaft ofthe zero setting mechanism, and carrying spur gears engagingcorresponding spur ears of the separate counting disks. The shaft f,when being rotated, is axially displaced, sothat its pins f engage studsal" formed on the spur gears a which are loosely mounted y.on the shaftf, but have'no axial displacement thereon. Said spur gears are inengagement with the teeth a1 of thecounting disks a.- If, however, thecommon zero setting shaft w is rotated, the shaft f remains stationary.The spury gears z arel held in their correct distances from one, anotherby sleeves o.

said zero setting mechanism with both counting mechanisms, the 'zerosetting mechanism being disconnectible from the counting Amechanismhaving tensl transferring means.

In testimony whereof I have hereunto set my hand in presence of twosubscribingjwitnesses. 1

FRANZ TRINKS.

Witnesses:

WILHELM LEHRKE, WILLI FAHN.

